Cheat to be successful in damaged sled (7)
I believe the answer is:
swindle
'cheat' is the definition.
(swindling is a kind of cheating)
'be successful in damaged sled' is the wordplay.
'be successful' becomes 'win' (I've seen this before).
'in' indicates putting letters inside.
'damaged' indicates anagramming the letters.
'sled' anagrammed gives 'sdle'.
'win' put within 'sdle' is 'SWINDLE'.
'to' is the link.
(Other definitions for swindle that I've seen before include "fleece" , "Bilk" , "Diddle, sting, twist" , "Cheat; fraud" , "Rip off" .)